Coin scale



G. R. WOOD May 7, 195..

COIN SCALE Filed May 25, 1953 4 Sheets-She'ef l INV'" TOR .M

WRNEY May 7, 1935. G R, WOOD 2,000,156

com SCALE 4 Sheets-Sheet 2 Filed May 23, 1933 INVENTOR G. R. WOOD.

\COIN SCALE May 7, 1935 Filed May 25, 1933 4 Sheets-Sheet 3 INVENTOR y 71935. G. R. WOOD zoomse COIN SCALE Filed May 25, 1933 4 Sheets-Sheet 4 FiG..

ATORNEY Patented May'7, 1935 a 3 UNITED, STATES PATEN QFFICE COIN SCALEGeorge R. Wood, Toronto, Ontario, Canada, as-

signor, by mesne assignments, to International Business MachinesCorporation, New York,

N. Y., a corporation'of New York Application May 1933, Serial No.672,385

5 Claims. (01. 194-95) This case relates to person-weighing scales. handbearing (as viewed in Fig. 1) being iixe'd The object of the invention,in general, is to in the upper reduced part of standard 20 and provide asimple and novel coin scale for weighthe other bearing being in thesimilar upper ing persons. reduced part of a standard 26 parallel tostand 5 More specifically, an object is to provide a aid 26 andalsorising' from base I4. Intermedh 5 coin scale in which the weight isnot indicated ate its ends, shaft 24 rigidly mountsthe dished untilthe-scale reaches equilibrium and the parts spider frame 27, spokes 28of which at their are at rest. outer ends are bent radially inward toprovide Another object is to provide a coin scale in flanges or lips 29to which the flat ring chart which the duration of the weighingindication 38 is secured. I 10 after aperson steps on the platform andde- To dampen oscillation of the weighing mechposits a coin is limitedalthough the individual anism, a bracket 390 carried by the nose end ofremains on the platform. the lever 12 is connected .to'the plunger rod30! Still another object is to provide a load conof a plunger (notshown) movable in a dash trolled indicator in a coin scale not directlyvishot 332 containing a damping fluid, usually 15 ible from the exteriorof the scale but an indiglycerine. I V M cation from which is visible ina mirror located Chart 30 has weight indications reversed with insidethe scale. 7 respect to a vertical sighting plane and adapted Eurtherand other objects and advantages to be correctly seen in a mirror 3|. vThe mirror will be hereinafter set forth in the accompanyis carried by asupporting plate 32 in-position :3

ing specification and claims, and shown in the 'toreflect theupper,-vertical, central portion of f drawings, which by way ofillustration show ,chart iifl. Plate 32 has sleeves 33 freely rotat-What is nowconsidered to be the preferred emably mounted on a shaft 34which is journaled bodiment of the invention. ,7 adjacent opposite endsin vertical brackets 35 'In the drawings: v integrallyextending from thereduced upper end s Fig. 1 is aside elevation of the scale with the ofrear standard 26. i I v I casing insection; Fixed to one end of shaft34-- -is an arm 35 Fig. 2 is a section on line '2-2 of Fig. 1; having atransversely projecting h1g3! for en- Fig. 3 is a front view with partof the casing gaging the back of supporting plate 32- of mirror brokenaway to show the interior; .31. The oute end of arm has a coin reoeivr-30 Fig. 4 is an end view of the chart and coin ingcup38 which in itsinitialposition, indicated controlled parts showing the latter inintermein Fig. -1' and in Fig. 4 (in dotted lines) is didiate and weightindicating position; rectly'below the coin chute 39. Pivoted to-armjfiFig. 5 is a view similar to Fig. 4 showing the is a link 40 which at itslower end is pinnedto 35 parts at a subsequent time; 7 a plunger 4|movable within an air dash pot 42 :35

Fig. 6 is a view looking at the chart and its carried by bracket 430extending from. rear frame; H v standard 26. I h I Fig. '7 is a top viewof the chart and coin he plunger 4| rotatably carr-ies a valve platecontrolled parts; V 43 with openings 44, which may be movegl to 40 Fig.8 -is a section online 88 of Fig. 7, and; different degrees ofregistration with ports 45 of 40 Fig. 9 is a section on line 9-4! ofFig. 7. v .the plunger to ,thereby adjust the checking The weighingmechanism is of conventional action of the dash pot on the plunger whenthe form including platform ill connected by legs-II latter descends orrises. I a to base levers l2 and I3 fulcrumed on the base About mideway,shaft 34 rigidly carriesa 45 frame I To the nose iron I 5 of lever I2 isthreaded arm 46 passing behind chart 3 0 into 95 connected the lower endof draft rod I5 hooked the dished frame 21 and there provided-with atits upper end to an equalizer l1, opposite ends poise 4 s threaded onthe arm. By locating the of which are hung from load resistant springs{8. .end of arm 46 and the poise 41 within the area The upper .ends ofsprings 18 are supported by hounded by the frame 21, the space insidethe 50 lugs 19 projectingfrom the vertical standard 20 frame is takenadvantage of thus providing a 50 a rising from base frame 14. Theequalizer H more compact arrangement than-if the arm .46 also has acentral connection to a rack member and poise 41 were to one side of thechartand 2|, the teeth 22 of which meshwith pinion 23 frame. U I on theindicator shaft 24. Shaft 24 is journaled Poise 41 isadjustedalong arm46 to justoi' erat opposite ends in ball bearings 25, the left'balancearm 36 and the mirror assembly when 55 Cir the parts are ininitial position, shown in Fig. 1 and in dotted lines in Fig. 4. In thisposition lug 37 is maintaining the mirror assembly generally parallel tothe chart plane. When a proper coin C is deposited through chute 39 incup 38, the weight of the coin added to that of arm 36 and the mirrorassembly is sufiicient to overbalance arm 46 and poise 41 and rock shaft34 and arm 36 clockwise, as viewed in Figs. 1, 4 and 5 away from initialposition against the checking and retarding influence of the air dashpot 42. As arm 36 rocks clockwise, mirror-3l and its backing plate 32followv lug 31 until plate 32 encounters rod 48 carried between thesidesof casing 49. 1; a

The mirror and plate are thus stopped in the full line positionindicated in Figs. 4 and 5 which may be termed the indicating position.In this position, the mirror 3! is at such an angle that the reflectionof the chart indications in the mirror may be seen through a sphericalmagnifying lens 56 held in'the' top wall of housing 49 of the scale.Theload indication is read against the zero line 5! carried inside thescale by frame 52 which mounts the lens 50 on the housing 49. Afterthemirror stops in indicating position, arm 36 still continues to moveagainst the retarding influence of dash pot 42 until the arm reaches theposition shown in Fig. 5. In this position, coin C falls from cup 38into a storage receptacle 53 carried by a bracket 54 secured to standard26. The weight of the coin no longer acting on arm 36, counterpoise 41overbalances arm 36 and returns the arm counterclockwise against theretarding influence of dash pct 42. When the arm on its return strokereaches the full line position shown in Fig. 4, its lug 31 engages plate32 and moves'the plate and mirror 3! counterclockwise to initialposition in readiness for the next operation. p

' In the interval during which the mirror 3| is moving clockwise frominitial dotted line position to full line reading position, as shown inFig. 4, there is no indication of the loadvisible through the lens 56.In this interval which may be termed the weighing interval, the weighingmechanism which has been set in motion by a person stepping on theplatform comes to equilibrium and the chart 30 has moved to a positioncorresponding to the load. To provide for the weighing mechanismreaching equilibrium before the mirror is in viewing position,

the mirror movement is timed or retarded by dash pot 42, acting througharm 36 to prevent the mirror reaching-viewing positionuntil the chart 30is substantially at rest. The timing of terval terminates when lug 37 onarm 36 encounters plate 32 on the return movement of the 2 arm andbegins to move the plate 32 and its mirror counterclockwise away fromreading position towards initial position.

Should the individual remain on the platform after this readinginterval, there will be no load indication. This obviously true also ifan additional person steps on the platform while the first is still onthe platform regardless of whether the first person thereafter continuesto stay on the platform or steps off after the second person has steppedon. Accordingly, only a single weight indication may be obtained by aperson stepping on the platform and depositing a single C0111.

The operation is briefly summarized as follows:

,An individual steps on platform It! and deposits a coin in slot 39. Theweighing mechanism is set in operation as soon as the person steps onthe platform to rotate the chart 30.

While the chart is still in motion, the arm 36, because of the weight ofthe deposited coin C, overbalances weight 41 and moves clockwisefroindotted to full line positions, Fig. 4, against the retarding andtiming action of dash pot 42. Mirror 3! follows arm 36 clockwise untilits carrying plate 32 encounters rod 48 which stops the mirror inindicating position. By this time, the weighing mechanism and chart areat rest and a steady and correct indication of the load .may be seen inmirror 3| through magnifying lens 53. The mirror remains in indicatingposition while arm 36 continues to move clockwise to drop the coin C instorage receptacle 53. When the coin escapes from cup 33' of arm 36, thearm is returned counterclockwise by weight 41. During this returnmovement, stop 37 on arm 36 encounters mirror support 32 and moves themirror out of viewing position, terminating the reading interval andreturning the mirror to initial position. The continued presence ofweight on the platform after the reading interval does not result in afurther indication unless an additional coin is deposited.

While there has been shown and described and pointed out the fundamentalnovel features of the invention as applied to a single modification, itwill be understood that various omissions and substitutions and changesin the form and details of the device illustrated and in its operationmay be made by those skilled in the art without departing from thespirit of the invention. It is the intention, therefore, to be limitedonly as indicated by the scope of the following claims.

What is claimed is:

1. In a coin scale, a load platform, weighing mechanism controlledthereby including a concealed load indicator, means for bringing theload indication of the indicator into view, coin controlled mechanismfor receiving a coin for a limited, predetermined interval after whichthe coin is automatically released independently of the weighingmechanism, the coin controlled mechanism being effective upon receptionof a 'coin for causing operation of said means, a device cooperatingwith the coin controlled mechanism' for delaying operation of said meansto retard exposure of the load indication until the indicator issubstantially at rest, and means controlled by the coin mechanism afterrelease of the coin for restoring said first-named means to initial,non-exposing position regardless of .the operation of said weighingmechanism.

2. In a coin scale, a load platform, weighing mechanism controlledthereby including a load indicator the indications of which are normallyunreadable, means for bringing the load indication of the indicator intoview, reciprocable coin set in motion a forward stroke by the weightcontrolled mechanism for receiving a coin and of the coin to causeoperation of said means to bring the load indication into view, aretarding device coacting with the coin controlled mechanism during itsinitial motion under the force of the coin for delaying operation ofsaid means to prevent exposure of the load indication until theindicator is substantially at rest, the coin controlled mechanismautomatically releasing said coin at the end of its forward strokeindependently of the weighing mechanism, and means for moving the coinmechanism on its return stroke after release of the coin to therebyrestore said first-mentioned means to initial non-exposing positionregardless of the operation of the weighing mechanism.

3. In a coin scale, a load platform, weighing mechanism controlledthereby including a load indicator the indications of which are normallyunreadable, means for bringing the load indication of the indicator intoview, coin controlled mechanism for'receiving a coin and set in motionby the weight of the coin to cause operation of said means to bring theload indication into view, and a retarding device coacting with the coincontrolled mechanism during its initial motion under the force of thecoin for delaying operation of said means to prevent exposure of theload indication until the indicator is substantially at rest, said coincontrolled mechanism and said means being relatively movable to permitthe coin controlled mechanism to subsequently move apart from said meansafter the latter has brought the load indication into view, saidsubsequent movement taking place under control of said retarding deviceto provide an extended interval for exposure by said means of the loadindication.

4. A coil scale having a platform, weighing mechanism controlled therebyincluding a nor. mally unreadable load indicator, coin controlledmechanism including an element for bringing the indicator into view anda reciprocatable member engaged by a coin to be moved downwardly by theforce of the coin, *said element and member being in abutting engagementwith the element having a portion resting on the member and tending tofollow the member upon a downward stroke of reciprocation of the latter,a stop for limiting said following movement of said element and tolocate the latter in'indicator exposing position while the, membercontinues to move further under thelforce'of the coin to complete itsdownward stroke at the termination of which it releases the coin,release of the coin causing the member to return upwardly and to engagethe element at an intermediate point of its return stroke to place theelement in non-exposing position, the interval of disengagement of theelement and memher during both strokes of the latter providingsufiicient time for reading the load indication of the indicator.

5. The invention according to claim 4, and means coacting with the coincontrolled mechanism from the beginning of its downward stroke to delayexposure by said element of the load indication until the indicator hasbeen given time to come to rest under the load.

GEORGE R. WOOD.

